github.com/NpoolPlatform/chain-middleware@v0.0.0-20240228100535-eb1bcf896eb9/pkg/mw/fiat/create.go (about)

     1  package fiat
     2  
     3  import (
     4  	"context"
     5  	"fmt"
     6  
     7  	fiatcrud "github.com/NpoolPlatform/chain-middleware/pkg/crud/fiat"
     8  	redis2 "github.com/NpoolPlatform/go-service-framework/pkg/redis"
     9  	basetypes "github.com/NpoolPlatform/message/npool/basetypes/v1"
    10  	npool "github.com/NpoolPlatform/message/npool/chain/mw/v1/fiat"
    11  
    12  	"github.com/NpoolPlatform/chain-middleware/pkg/db"
    13  	"github.com/NpoolPlatform/chain-middleware/pkg/db/ent"
    14  	"github.com/NpoolPlatform/libent-cruder/pkg/cruder"
    15  
    16  	"github.com/google/uuid"
    17  )
    18  
    19  type createHandler struct {
    20  	*Handler
    21  }
    22  
    23  func (h *createHandler) createFiat(ctx context.Context, cli *ent.Client) error {
    24  	if _, err := fiatcrud.CreateSet(
    25  		cli.Fiat.Create(),
    26  		&fiatcrud.Req{
    27  			EntID: h.EntID,
    28  			Name:  h.Name,
    29  			Logo:  h.Logo,
    30  			Unit:  h.Unit,
    31  		},
    32  	).Save(ctx); err != nil {
    33  		return err
    34  	}
    35  	return nil
    36  }
    37  
    38  func (h *Handler) CreateFiat(ctx context.Context) (*npool.Fiat, error) {
    39  	if h.Name == nil {
    40  		return nil, fmt.Errorf("invalid fiatname")
    41  	}
    42  	if h.Unit == nil {
    43  		return nil, fmt.Errorf("invalid fiatunit")
    44  	}
    45  
    46  	lockKey := fmt.Sprintf(
    47  		"%v:%v",
    48  		basetypes.Prefix_PrefixSetFiat,
    49  		*h.Name,
    50  	)
    51  	if err := redis2.TryLock(lockKey, 0); err != nil {
    52  		return nil, err
    53  	}
    54  	defer func() {
    55  		_ = redis2.Unlock(lockKey)
    56  	}()
    57  
    58  	h.Conds = &fiatcrud.Conds{
    59  		Name: &cruder.Cond{Op: cruder.EQ, Val: *h.Name},
    60  	}
    61  	h.Offset = 0
    62  	h.Limit = 2
    63  
    64  	fiat, err := h.GetFiatOnly(ctx)
    65  	if err != nil {
    66  		return nil, err
    67  	}
    68  	if fiat != nil {
    69  		return fiat, nil
    70  	}
    71  
    72  	id := uuid.New()
    73  	if h.EntID == nil {
    74  		h.EntID = &id
    75  	}
    76  
    77  	handler := &createHandler{
    78  		Handler: h,
    79  	}
    80  
    81  	err = db.WithClient(ctx, func(_ctx context.Context, cli *ent.Client) error {
    82  		if err := handler.createFiat(_ctx, cli); err != nil {
    83  			return err
    84  		}
    85  		return nil
    86  	})
    87  	if err != nil {
    88  		return nil, err
    89  	}
    90  
    91  	return h.GetFiat(ctx)
    92  }